- Add AGPLv3 LICENSE, CHANGELOG.md, SECURITY.md, CODE_OF_CONDUCT.md
- Add .editorconfig, .dockerignore, .prettierrc, .env.example
- Configure Biome (biome.json) and ESLint (eslint.config.js) linters
- Add Knip dead-code checker (knip.json)
- Add git-cliff changelog automation (cliff.toml)
- Configure pre-commit hooks (.pre-commit-config.yaml)
- Add Vitest config with coverage (vitest.config.ts)
- Update .gitlab-ci.yml with 7-stage compliant pipeline
  (lint, type-check, secret-scan, audit, test, changelog, build)
- Add Spec-Kit structure (.specify/constitution.md + feature specs)
- Extract NPK and weather logic into src/utils/agriHelpers.ts
- Add 8 unit tests in src/utils/agriHelpers.test.ts (all passing)
- Update package.json with QA scripts and devDependencies

Compliance checks addressed:
  linter, type-checker, secret-scanning, dependency-audit,
  coverage-reporting, changelog-automation, SBOM/supply-chain